Abstract
Atomic layer deposition (ALD) of alumina overcoating can significantly enhance the stability of copper oxide-based catalysts for catalytic ozonation of organic compounds in advanced water/wastewater treatment. The catalyst leaching was reduced by about 90% while high (up to 98%) activity was demonstrated in terms of total organic carbon (TOC) removal. Synchrotron X-ray absorption spectroscopy results indicated that the Al2O3 protecting layer passivated the under-coordinated copper sites, which were likely to be responsible for leaching.
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